Question
PSLE
Mary has a number of files in three colours: green, brown and orange. 310 of the files are green. The number of green files is twice the number of brown files. What fraction of the files is orange?
2 m

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PSLE
Mary has a number of files in three colours: green, brown and orange. 310 of the files are green. The number of green files is twice the number of brown files. What fraction of the files is orange?